help!

4th edition: Q1.2.1, Q1.2.2, Q1.2.3, Q1.3.1, Q1.3.4, Q1.5.2, P1.2.1, P1.9.1 (Vc=$0.05/gmol) 1.7 How are a disturbance and a change in an MV alike? How are they different? 1.8 What is the difference between feedback control and feedforward control? 1.9 How can you convert a closed-loop process into an open-loop process? 1.10 In P\&IDs, how are pneumatic lines and electrical connections distinguished from each other? 1.13 What does a symbol on a control diagram that ends with a " C " represent? 1.18 What is the most common actuator used in the CPI? 1.25 Identify a control system with which you interact daily that is not presented in the text. Identify the controller, actuator, process, and sensor and draw a block diagram for the control loop. 1.40 Determine the optimum reactor temperature for the CSTR in Example 1.1 if the value of C(Vd) is decreased to $0.05/gmol. What changes? What does a negative value of byproduct signify